Screenshot not working in ICS?

Hey everyone,
I read that we are now able to take screenshots with ICS by simply holding the power button and down volume rocker for several seconds. I went to try it and it doesn't work at all for me.

Has anyone else had similar issues with the screen shot function not working or is there some option i need to toggle in order for the feature to become available?

It works.. you do not have to hold for several seconds as that will cause the phone to reboot... just a quick press is all it takes..
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Both buttons at the same time not one then the other...dancedroid

It works.. you do not have to hold for several seconds as that will cause the phone to reboot... just a quick press is all it takes..
.
Both buttons at the same time not one then the other...dancedroid

Click to expand...

Oh perfect, i was doing one before the other. thanks for the clarification!